Fieldbus Junction Boxes (Type of Protection Ex i)
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Fieldbus Junction Boxes (Type of Protection Ex i)
The following section applies to fieldbus junction boxes with the type of protection Ex i for
installation in explosion hazardous (classified) locations. The information applies only in
combination with the respective datasheets. These datasheets are available online at
3.1
Intended Use
Fieldbus devices are often connected via spurs to the main line (trunk) of the fieldbus. Fieldbus
junction boxes connect fieldbus devices to a fieldbus transmission line (main line, or trunk).
The following versions are available with different outputs for connecting field devices:
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F2-JB-I... for up to 8 field devices
■
F3-JB-I... for up to 2 field devices
■
F4-JB-I... for 1 field device
For details on the type code, see chapter 2.
Fieldbus junction boxes can be used in any fieldbus system using the "Manchester bus
powered" technology corresponding to IEC 61158-2. This includes the H1 bus of the
FOUNDATION Fieldbus and the PROFIBUS PA. In newer documentation, the PROFIBUS PA is
also known as the PROFIBUS MBP or PROFIBUS MBP-IS, if the intrinsically safe variants are
meant.
Fieldbus junction boxes, depending on the type of protection of the power supply circuit, may
be installed in equipment category 1G (Zone 0), 2 G (Zone 1) or 3 G (Zone 2), or in Class I,
Division 1 and 2, Class II, Division 1 and 2, or Class III, Division 1 and 2 in the temperature
class T4 of an explosion hazardous (classified) location.
All applicable laws or Directives for the application or planned use must be observed.
Fieldbus junction boxes are only approved for proper professional usage in accordance with
the intended uses. Improper handling voids any claim made under the warrantee and any
manufacturer's liability.
Fieldbus junction boxes may only be operated by trained and qualified personnel in
accordance with this documentation.
Danger!
Explosion hazard from damaged electronic components
Premature wear of electronic components in a device that was previously used in a general
electrical installation can cause sparks that can ignite the surrounding potentially explosive
atmosphere.
Never install devices that have already been operated in general electrical installations in
electrical installations used in combination with hazardous areas!
Note!
Fieldbus junction boxes meet the requirements of FISCO and of Entity.
Warning!
Danger to life from improper use of the device
The safety of the operating personnel and the system is not ensured if the device is not used
according to its intended use as described here.
Ensure that you use the device according to its intended use.
